Protrellus

 

Contents

 

Rev 02/23/2024

  Classification Biology and Ecology
Morphology and Anatomy Life Cycle
Return to Protrellus Menu Ecosystem Functions and Services
Distribution Management
Return to Thelastomatidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

 

Classification:

Chromadorea
                    Chromadoria

Protrellus Cobb, 1920

Type species of the genus: Protrellus aureus Cobb, 1920

      Back to Top

Morphology and Anatomy:

.

Females:

  •  cuticular annuli often wide anterior to vulva, then flattening out to disappear posterior to esophageal region.
  • Mouth opening circular or triangular; 8 papillae or labiopapillae;
  • Pair of small lateral amphids.
  • Eesophagus tripartite, anterior corpus with more or less swollen base separated from posterior valvular bulb by less distinct isthmus.
  • Nerve ring around esophageal corpus.
  •  Intestine expanded anteriorly; glands betweeni ntestine and rectum sometimes distinct.
  • Vulva anterior to base of oesophagus. Monodelphic or didelphic.
  •  Ovijector sometimes present. Eggs oval or ellipsoidal, colorless or yellowish, often with a polar or lateral cuticular crest or boss, or with a lateral groove.
  • Excretory pore anterior to vulva.
  • Tail short, conical, or acutely pointed, or short cone with long filiform projection

Males:

  •  much smaller than females.
  • Excretory pore at or posterior to base of esophagus.
  • Monorchic, testis reflexed or outstretched.
  • Tail variableshape but never simply filiform
  •  2-4 pairsof genital papillae
  • Single spicule.

Ref; Zervos, 1987

Body size range for the species of this genus in the database - Click:

Back to Top

Distribution:

 

Back to Top

Feeding:

A genus of intestinal parasites of cockroaches; Females, males, and juveniles found in hind gut of cockroaches.

Back to Top

Biology and Ecology:

   
Back to Top

Life Cycle:

For Ecophysiological Parameters for this genus, click 
Back to Top

Ecosystem Functions and Services:

 

Back to Top

Management:

 

Back to Top

References:

Camino, N.B., de Villalobos, C. 2013. A new species of Protrellus Cobb, 1920 (Nematoda, Thelastomatidae) parasite of the field cockroach Blatella vaga Hebard, 1919 (Blattodea, Blattidae) from Catamarca, Argentina. Acta Parasitologica, 58: 98-104

Zervos, S. 1987. Protrellus dalei n. sp.. Blatticola barryi n. sp., and Suifunema mackenziei n. sp., thelastomatid nematodes from New Zealand cockroaches. N.Z. Journal of Zoology 14:239-250.

Back to Top

Copyright © 1999 by Howard Ferris.
Revised: February 23, 2024.